Question

Use the Periodic Table to complete the questions: How many valence electrons do an atom of silicon (Si) and an atom of Hydrogen (H) have? (1 point) Responses 1:4 1:4 4:1 4:1 2:7 2:7 6:1 6:1 Question 2 Silane is a molecule made up of Silicon (Si) and Hydrogen (H). Use the periodic table, and your knowledge of valence electrons, to determine the chemical formula for this substance. (1 point) Responses SiH SiH SiH4 SiH4 Si2 H4 Si2H4 H2 SO4 H2SO4 Question 3 What type of bonds are formed between silicon (Si) and hydrogen (H)?(1 point) Responses Covalent Covalent nuclear nuclear Polar Polar Ionic Ionic Question 4 Looking at the electronegativities of silicon and hydrogen, what can you determine about their electronegativities? (1 point) Responses Silicon has twice the electronegativity of hydrogen. Silicon has twice the electronegativity of hydrogen. The values of their electronegativities are extremely far apart. The values of their electronegativities are extremely far apart. The values of their electronegativities are similar. The values of their electronegativities are similar. Silicon has half the electronegativity of hydrogen. Silicon has half the electronegativity of hydrogen. Skip to navigation

Answer 1

Here are the answers to your questions based on the information from the Periodic Table.

Question 1: How many valence electrons do an atom of silicon (Si) and an atom of hydrogen (H) have?

• Answer: Silicon (Si) has 4 valence electrons, and Hydrogen (H) has 1 valence electron.
• Correct Response: 4:1

Question 2: Silane is a molecule made up of Silicon (Si) and Hydrogen (H). What is the chemical formula for this substance?

• Answer: Silane consists of one silicon atom bonded to four hydrogen atoms (SiH₄).
• Correct Response: SiH4

Question 3: What type of bonds are formed between silicon (Si) and hydrogen (H)?

• Answer: The bonds formed between silicon and hydrogen in silane are covalent bonds.
• Correct Response: Covalent

Question 4: Looking at the electronegativities of silicon and hydrogen, what can you determine about their electronegativities?

• Answer: The values of their electronegativities are similar, as both elements are relatively moderate in electronegativity.
• Correct Response: The values of their electronegativities are similar.

Feel free to ask if you have more questions!